diff --git a/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs b/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs
deleted file mode 100644
index f8c1cdd..0000000
--- a/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-using System.Collections.Generic;
-
-namespace Cryville.Crtr.Browsing {
-	public abstract class ExtensionInterface {
-		public abstract IEnumerable<ResourceConverter> GetResourceConverters();
-		public abstract IEnumerable<LocalResourceFinder> GetResourceFinders();
-	}
-}
diff --git a/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs.meta b/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs.meta
deleted file mode 100644
index c5c3cf4..0000000
--- a/Assets/Cryville/Crtr/Browsing/ExtensionInterface.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: 4ffe72fef6ebb9e4da3571b4117f0d6d
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
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-  assetBundleVariant: 
diff --git a/Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs b/Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs
index 32e6e8f..dea87cb 100644
--- a/Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs
+++ b/Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs
@@ -1,5 +1,6 @@
 using Cryville.Common;
 using Cryville.Common.Unity;
+using Cryville.Crtr.Extension;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
diff --git a/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs b/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs
deleted file mode 100644
index 1cc377d..0000000
--- a/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace Cryville.Crtr.Browsing {
-	public abstract class LocalResourceFinder {
-		public abstract string Name { get; }
-		public abstract string GetRootPath();
-	}
-}
diff --git a/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs.meta b/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs.meta
deleted file mode 100644
index a36e35d..0000000
--- a/Assets/Cryville/Crtr/Browsing/LocalResourceFinder.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: f5b3f3294f679f14f8ec1195b0def630
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
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-  icon: {instanceID: 0}
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-  assetBundleVariant: 
diff --git a/Assets/Cryville/Crtr/Browsing/ResourceBrowserMaster.cs b/Assets/Cryville/Crtr/Browsing/ResourceBrowserMaster.cs
index 635e30f..dd942e4 100644
--- a/Assets/Cryville/Crtr/Browsing/ResourceBrowserMaster.cs
+++ b/Assets/Cryville/Crtr/Browsing/ResourceBrowserMaster.cs
@@ -1,7 +1,7 @@
 using Cryville.Common;
 using Cryville.Common.Unity.UI;
 using Cryville.Crtr.Config;
-using Newtonsoft.Json;
+using Cryville.Crtr.Extension;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.SceneManagement;
@@ -94,24 +94,4 @@ namespace Cryville.Crtr.Browsing {
 		public AsyncDelivery<Texture2D> Cover { get; set; }
 		public ChartMeta Meta { get; set; }
 	}
-
-#pragma warning disable IDE1006
-	public class MetaInfo {
-		public string name { get; set; }
-		public string author { get; set; }
-		[JsonRequired]
-		public string data { get; set; }
-	}
-	public class SongMetaInfo {
-		public string name { get; set; }
-		public string author { get; set; }
-	}
-	public class ChartMeta : MetaInfo {
-		public SongMetaInfo song { get; set; }
-		public float length { get; set; }
-		public string ruleset { get; set; }
-		public int note_count { get; set; }
-		public string cover { get; set; }
-	}
-#pragma warning restore IDE1006
 }
diff --git a/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs b/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs
deleted file mode 100644
index a696a5f..0000000
--- a/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs
+++ /dev/null
@@ -1,79 +0,0 @@
-using Cryville.Common;
-using Newtonsoft.Json;
-using System.Collections.Generic;
-using System.IO;
-
-namespace Cryville.Crtr.Browsing {
-	public abstract class ResourceConverter {
-		public abstract string[] GetSupportedFormats();
-		public abstract IEnumerable<Resource> ConvertFrom(FileInfo file);
-	}
-	public abstract class Resource {
-		protected Resource(string name) {
-			Name = StringUtils.EscapeFileName(name);
-		}
-		public string Name { get; private set; }
-		public abstract bool Valid { get; }
-		public override string ToString() {
-			return string.Format("{0} ({1})", Name, ReflectionHelper.GetSimpleName(GetType()));
-		}
-	}
-	public class RawChartResource : Resource {
-		public RawChartResource(string name, Chart main, ChartMeta meta) : base(name) {
-			Main = main; Meta = meta;
-		}
-		public Chart Main { get; private set; }
-		public ChartMeta Meta { get; private set; }
-		public override bool Valid { get { return true; } }
-	}
-	public abstract class FileResource : Resource {
-		public FileResource(string name, FileInfo master) : base(name) {
-			Master = master;
-			Attachments = new List<FileInfo>();
-		}
-		public FileInfo Master { get; private set; }
-		public List<FileInfo> Attachments { get; private set; }
-		public override bool Valid {
-			get {
-				if (!Master.Exists) return false;
-				foreach (var file in Attachments) {
-					if (!file.Exists) return false;
-				}
-				return true;
-			}
-		}
-	}
-	public class ChartResource : FileResource {
-		public ChartResource(string name, FileInfo master) : base(name, master) {
-			using (var reader = new StreamReader(master.FullName)) {
-				var meta = JsonConvert.DeserializeObject<ChartMeta>(reader.ReadToEnd());
-				Attachments.Add(new FileInfo(Path.Combine(master.Directory.FullName, meta.data + ".json")));
-				if (meta.cover != null) Attachments.Add(new FileInfo(Path.Combine(master.Directory.FullName, meta.cover)));
-			}
-		}
-	}
-	public class SongResource : FileResource {
-		public SongResource(string name, FileInfo master) : base(name, master) { }
-	}
-	public class RulesetResource : FileResource {
-		public RulesetResource(string name, FileInfo master) : base(name, master) {
-			using (var reader = new StreamReader(master.FullName)) {
-				var meta = JsonConvert.DeserializeObject<Ruleset>(reader.ReadToEnd());
-				Attachments.Add(new FileInfo(Path.Combine(master.Directory.FullName, meta.data + ".pdt")));
-			}
-		}
-	}
-	public class SkinResource : FileResource {
-		public string RulesetName { get; private set; }
-		public SkinResource(string name, FileInfo master) : base(name, master) {
-			using (var reader = new StreamReader(master.FullName)) {
-				var meta = JsonConvert.DeserializeObject<Skin>(reader.ReadToEnd());
-				RulesetName = meta.ruleset;
-				Attachments.Add(new FileInfo(Path.Combine(master.Directory.FullName, meta.data + ".pdt")));
-				foreach (var frame in meta.frames) {
-					Attachments.Add(new FileInfo(Path.Combine(master.Directory.FullName, frame)));
-				}
-			}
-		}
-	}
-}
\ No newline at end of file
diff --git a/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs.meta b/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs.meta
deleted file mode 100644
index 261bc67..0000000
--- a/Assets/Cryville/Crtr/Browsing/ResourceConverter.cs.meta
+++ /dev/null
@@ -1,12 +0,0 @@
-fileFormatVersion: 2
-guid: 2546fb1d514348842a14a03531be192d
-timeCreated: 1637982768
-licenseType: Free
-MonoImporter:
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-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
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diff --git a/Assets/Cryville/Crtr/Ruleset.cs b/Assets/Cryville/Crtr/Ruleset.cs
index 93e3987..7028514 100644
--- a/Assets/Cryville/Crtr/Ruleset.cs
+++ b/Assets/Cryville/Crtr/Ruleset.cs
@@ -1,7 +1,7 @@
 using Cryville.Common;
 using Cryville.Common.Collections.Generic;
 using Cryville.Common.Pdt;
-using Cryville.Crtr.Browsing;
+using Cryville.Crtr.Extension;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
diff --git a/Assets/Cryville/Crtr/Skin.cs b/Assets/Cryville/Crtr/Skin.cs
index a827288..194670e 100644
--- a/Assets/Cryville/Crtr/Skin.cs
+++ b/Assets/Cryville/Crtr/Skin.cs
@@ -1,7 +1,7 @@
 using Cryville.Common;
 using Cryville.Common.Collections.Generic;
 using Cryville.Common.Pdt;
-using Cryville.Crtr.Browsing;
+using Cryville.Crtr.Extension;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
diff --git a/Assets/Plugins/Cryville.Crtr.Extension.dll b/Assets/Plugins/Cryville.Crtr.Extension.dll
new file mode 100644
index 0000000..cfc4d44
Binary files /dev/null and b/Assets/Plugins/Cryville.Crtr.Extension.dll differ
diff --git a/Assets/Plugins/Cryville.Crtr.Extension.dll.meta b/Assets/Plugins/Cryville.Crtr.Extension.dll.meta
new file mode 100644
index 0000000..cfa03b9
--- /dev/null
+++ b/Assets/Plugins/Cryville.Crtr.Extension.dll.meta
@@ -0,0 +1,33 @@
+fileFormatVersion: 2
+guid: d79db49599a8b74419a35dc3a06a1aee
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 0
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      Any: 
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        DefaultValueInitialized: true
+  - first:
+      Windows Store Apps: WindowsStoreApps
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: